634 



GENTIANA 



EE. iVo/ fringed: tahix 5-cut: co- 

 rolla lobes tipped witha sharp 



point 17. quinquefolia 



CC. Corolla plaited. 

 D. Stitjrnas 2, always distinct. 

 E. Capsiiles finally raised on a 



distinct stalk. 

 F. Anthers permanently grown 



together. 

 G. Calyx as long as the corolla . 18. Froelicliii 

 GG. Calyx one-half or one-third as 

 long as the corolla. 



H. Seeds not at all winged 19. asclepiadea 



HH. Seeds slightly winged. 



I. Fls. open 20. Pneumonanthe 



II. Fls. closed, Hue 21. Saponaria 



HHH. Seeds strongly winged. 



I. Fls. closed, purple 22. Andrewsii 



II. Fls. open 23. linearis 



FF. Anthers free, at least finally. 



u. JVnmber of corolla lobes 10.. 2i. Pyrenaica 

 GG. Number of corolla lobes 5 

 (rarely 4). 



H. Calyx 4-lobed 25. prostrata 



HH. Calyx 5-lobed. 



1. Ifvs. distinctly rough above 



{hispid-scabrous} 26. acabra 



11. Les. distinctly rough at the 

 margins {scabrous). 

 .1. Lobes of calyx shorter than 



the calyx tube 27. FoTtuni 



jj. Lobes of calyx as long as 



the calyx tube. 



K. Corolla lobes ovate, acute. 



a tittle longer than the 



)nurli cut apprndaries.. ,28. BeptemHda 



KK. C»,;,l],i l„h,s ohJ,,i,,i-Uln- 



nlal, 



tin 



I If 



III 



■utap- 



piiulages 29. affinis 



Lvs. not distinctly rough 

 above or at margins. 

 J. Sct'ds not at all winged. 

 K. Form of corolla lobes 



li mar-oblong 30. Olivieri 



KK. Form of corolla lobes 

 ovate, often broadly so. 

 L. Fls. solitary. 



M. Peduncled 31. Porphyrio 



MM. IVot peduncled 32. omata 



LL. Fls. in clusters of S-5 or 

 more. 

 M. Lvs. lanceolate-linear.. 3Z.trii\0T2L 

 MM. Lrvs. ovate to oblong- 

 lanceolate. 



N. Height S-4 ft 34. sceptrum 



NN. Height 9-12 in. 



o. Calyx lobes ovate, 

 about as long as the 



calyx tube 35. calycosa 



00. Calyx lobes linear, 

 moderately or much 

 shorter than the 



ca lyx tube 36. Parryi 



JJ. Seeds winged {at the base 

 in Karroo ; in Bigelovii 

 wings narrow, thicJcish), 

 K. Height 2-8 in. : fls. spot- 

 ted. 

 L. Pedicel % in. long or 



more 37. Kurroo 



LL. Pedicel very short, prac- 

 tically absent 38. Newberryi 



KK. Height 1-2 ft. 



L. Fls. in a dense spike 39. Bigelovii 



LL. Fls. 1-few or several. 

 M. Appendages conspicu- 

 ous, sometimes nearly 

 as long as the corolla 



lobes 40. Oregana 



MM. Appendagesonlyhalfas 

 long as the corolla 

 lobes 41. puberula 



GENTIANA 



EE. Capsule sessile. 

 F. Anthers grown together: style 



distinct: seeds winged. 

 G. Calyx ovut. the lobes longer 



tha n the r<i lyx tube 42. Pannomca 



GG. Calyx entire, truncate, indis- 

 tinctly S-lobed 43. Gaudini 



VF. Anthers free: style usually 



not distinct: seeds not winged. 



G. LfVS. 6-12 in. long: calyx 5-0- 



lobed 44. macrophylla 



GO. Lvs. much shorter: calyx 4- 



lobed 45. Cruciata 



t>T>. Stigmas contiguous, rather 

 funnel-shaped, the margin ere- 

 nate-fimbriate. 

 E. Anthers free: style distinct. 

 F. Calyx pellucid, veiny. 



FF. Calyx leafy 40. Carpatica 



G. Seeds winged 47. imbricata 



GG. Seeds not winged. 



H. Lvs. ovate 48. verna 



HH. Lvs. obovate 49. Bavarica 



HHH. Lvs. linear 50. pumila 



EE. Anthers connate: style short. .51. acaulis 

 F. Fls. spotted. 



G. Color sky-blue 52. angTistifolia 



GG. Color violet-blue 53. Kochiana 



FP. Fls. not spotted. 

 a. Corolla broadly bell-shaped. 



H. Size of fls. large 54. Clusii 



HH. Size of fls. small 55. alpina 



GG. Corolla almost cylindrical . .56. BiBe,nca, 



1. liltea, Linn. Fls. in dense, umbel-like cymes ; co- 

 rolla 5-6-parted; lobes oblong-linear, acuminate; anthers 

 free; style none. July-Sept. Eu., Asia Minor. — Prop, 

 only by seed. Sow seed in Nov. incoldfraiue. Seedlings 

 appear the following March and April. In May and June 

 prick them out under a coldfraine. and in Aug. transfer 

 young plants to pots, where they should be kept until 

 needed for permanent outdoor use. Be very careful 

 never to break the roots. Sometimes cult, abroad for 

 medicine. 



2. Biirseri, Lapeyr. Lvs. 7-nerved : corolla mostly 

 6-cut; lobes ovate-oblong, acute; anthers connate; style 

 distinct. June, July. Pyrenees. — Cult, like 1. 



3. deciimbens, Linn., f. {G. adsc^ndens. Pall.). Lvs. 

 linear-lauceolate, margins scabrous: tls. blue; corolla 

 narrowly obcouical, toothed between the lobes; lobes 5, 

 ovate; anthers connate, finally free. Himal.,Sib. June- 

 Aug. B.M. 705, 723. -Cult like 1. 



4. purpurea, Linn. Lvs. ovate-oblong, 5-nerved: fls. 

 purple above; corolla tube yellowish, club-shaped; lobes 

 mostly 6, obovate-subrotund, one-third the length of the 

 tube. Aug., Sept. Eu. L.B.C. 6:583 shows a rich, dull 

 purple, with no trace of blue. — Compost of .sphagnum 

 and heath soil. Be careful not to break the roots. 



5. rtlbra, Clairv.((?. 77i(!Bia.s;i, Gillab.). One of 5 or 

 more natural hybrids between G. lutea and some species 

 of the section Ccelanthe, which includes G. punctata, 

 purpurea, Pannonica, and Burseri : fls. purplish out- 

 side. Swiss Alps. 



6. punctata, Linn. Lvs. 5-nerved : calyx 5-7-cut : 

 corolla tube bell-shaped ; lobes ovate, muticous, one-third 

 the length of the tube ; anthers finally free. Middle Eu. — 

 The spots are not arranged in any definite order. This 

 belongs to the section Ccelanthe, in which the seed has a 

 wing of the same color, while the next 5 species belong 

 to the section Pneumonanthe, in which there is no wing, 

 or it is of a different color. — Cult, like 18. 



7. Alba, Muhl. St. stout: lvs. acuminate, with a clasp- 

 ing base : fls. in a terminal head, with single or clustered 

 ones in the upper axils; dull white, commonly tinged 

 yellowish or greenish; corolla resembling G. Saponaria, 

 but more bell-shaped and open; lobes ovate, short, little 

 if at all spreading. Low grounds and mountain mea- 

 dows, N. Amer. B.M. 1551, erroneously, as G. ochro- 

 leuca. — Cult, like 20. 



8. ochroleilca, Frtel. .St. ascending: lvs. ovate-lanceo- 

 late and obovate: fls. in crowded terminal, nearly sea- 

 sile, leafy cymes; corolla yellowish white, club-shaped 



